198444877 has 2 divisors, whose sum is σ = 198444878. Its totient is φ = 198444876.

The previous prime is 198444823. The next prime is 198444881. The reversal of 198444877 is 778444891.

It is a happy number.

198444877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175986756 + 22458121 = 13266^2 + 4739^2 .

It is a cyclic number.

It is not a de Polignac number, because 198444877 - 2⁷ = 198444749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198444277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99222438 + 99222439.

It is an arithmetic number, because the mean of its divisors is an integer number (99222439).

Almost surely, 2^198444877 is an apocalyptic number.

It is an amenable number.

198444877 is a deficient number, since it is larger than the sum of its proper divisors (1).

198444877 is an equidigital number, since it uses as much as digits as its factorization.

198444877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1806336, while the sum is 52.

The square root of 198444877 is about 14087.0464257061. The cubic root of 198444877 is about 583.2838662452.

The spelling of 198444877 in words is "one hundred ninety-eight million, four hundred forty-four thousand, eight hundred seventy-seven".